Improvement in ore-crushers



W. P. HAMMOND.

lmprovementin Ore-Crushers.

No. 131,612, Patented Sep.24,18 72.

ailitnema z gunman wfl mm UNITED STATES PATENT OFFICE.

WILLIAM P. HAMMOND, OF NAPA CITY, CALIFORNIA, ASSIGNOR TO HIM- SELF ANDHENRY MYGATT, OF SAME PLACE.

IMPROVEMENT IN ORE-CRUSHERS.

Specification forming part of Letters Patent No. 131,612, datedSeptember 24, 1872.

To all whom it may concern:

Be it known that 1, WILLIAM P. HAMMOND, of Napa City, in the county of Napa and State of California, have invented a new and useful Improvementin Ore-Grnshers, &c., of which the following is a specification:

In the accompanying drawing, Figure 1 is a front view of my improvement,and Fig.2 is a detail sectional view taken through the line w m, Fig. 1.

Similar letters of reference indicate corresponding parts.

My invention has for its object to furnish an improved device forraising the stamps for crushing rock and for other purposes, which shallbe simple in construction and effective in operation, working with lessfriction and requiring less power to operate it than the ordinarydevices for such purposes; andit consists in the construction andarrangement of the various parts of the device, as hereinafter morefully described.

A represents the frame-work of the machine.

B is the stamp, the shaft 0 of which passes up through guideholes in theframe A so that it may always move up and down vertically. D is thedriving-shaft, which revolves in bearings in the frame A, and. to whichpower may be applied by a band and pulley, or by other means, as may bedesired or convenient. To

the horizontal shaft D is attached a cam, E, as shown in Figs. 1 and 2.The cam E is made slightly spiral so as to slightly rotate the stamp Bwhile being raised. F is a small roller, the face of which is grooved tofit upon the face of the cam E. The roller F is pivoted to the tappet G,through which the shaft (l passes, and which is kept in place upon thesaid shaft 0 by the collars I J ,placed upon the said shaft, the onebelow and the other above the said tappet. The upper collar J isadjustably secured to the said shaft 0 by a set-sorew or otherconvenient adjustable means, so that the stroke of the stamp may beregulated as desired. The tappet G is so arranged that the axis of theroller F may be directly over the shaft D. By this arrangement the camwill lift the stamp vertically, and with the greatest advantage ofleverage, so as to require the smallest amount of power. H is a guide,within which the tappet G moves up and down, so 1 as to always keep theroller F in proper position and thus diminishfriction. The guide H isarranged in an inclined position, as shown in Fig. 1. By thisconstruction the spiral shape of the cam E and the inclination of theguide H move the tappet G laterally as it rises, and the frictionbetween the tappet G and. the collar J causes the said tappet, by itslateral movement, to partially rotate the stamp. K is a smallfriction-roller pivoted to a cross-bar of the frame A, upon that side ofthe stampshaft (J, toward which said shaft is slightly drawn by theaction of the cam E to prevent any friction from said cause.

